Respiratory pressure therapy device

A respiratory pressure therapy device comprising:

• an enclosure including a first portion and a second portion, the second portion configured to engage the first portion in an assembled configuration;
• a blower to provide a supply of air for respiratory pressure therapy, the blower enclosed at least partially in the enclosure,
• wherein the blower includes a blower inlet and a blower outlet, the blower outlet including an axis that is coaxial with an axis of the blower inlet;
• a plurality of flow tubes enclosed at least partially in the enclosure, the plurality of flow tubes arranged upstream of the blower inlet of the blower;
• and
• a blower inlet muffler comprising a noise attenuating material,
• wherein the noise attenuating material is configured and arranged to face the blower inlet of the blower such that the axis of the blower inlet passes through a thickness of the noise attenuating material,
• wherein the noise attenuating material is configured and arranged to face an opening of at least one of the plurality of flow tubes such that an axis of the opening of at least one of the plurality of flow tubes passes through the thickness of the noise attenuating material, and
• wherein each of the first portion and the second portion of the enclosure supports and retains at least a portion of the noise attenuating material facing the blower inlet and the opening of at least one of the plurality of flow tubes in the enclosure.